How do I connect Nexus MCP Server to Claude?

Run `claude mcp add nexus-mcp -- uvx nexus-mcp` in Claude Code, or add the same command and arguments under mcpServers in Cursor's mcp.json or Claude Desktop's claude_desktop_config.json, then restart the client. The blocks above are ready to paste.

Is Nexus MCP Server free?

The listed licence is MIT. Check the upstream terms for permitted use and commercial requirements; a public repository does not by itself mean the software is free or open source. Connected APIs and hosted services may have separate charges.

What can Nexus MCP Server do?

Nexus MCP Server documents 18 tools to the agent, including agent_backends, agent_cancel, agent_continue. The descriptions above come from project documentation. A live handshake does not test individual tool behavior.

Nexus MCP

Unclaimed

by j7an

MCP server that lets AI models invoke CLI agents (Codex, Claude, OpenCode) as tools — with parallel execution, retries, and structured output parsing.

Set up this server

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01 / Choose your client

02 / Before you connect

Authentication is not specified. Check the project instructions before connecting.

Install the runtime required by the project and make it available to your client.

Project instructionsEnvironment variable names (optional)

Use names from the project instructions, separated by commas. Enter names only, never secret values.

03 / Add the configuration

Source: generated from public install instructions

claude mcp add --transport stdio 'nexus-mcp' -- 'uvx' 'nexus-mcp'

Run in your terminal after replacing any placeholders.

04 / Check it in your client

Open your client’s MCP settings and confirm the server connects and lists its tools. A copied configuration does not confirm a working connection.

ai-agentsai-orchestrationclaude-codeclaude-desktopclaudecodecli-toolscodexcodex-clifastmcpgemini-climcpmcp-servermcp-serversmodel-context-protocolmulti-agentopencode

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Security profile

Claimed and verified servers get a weekly static scan that shows what the code can reach: external services, environment variables, shell commands, agent configuration folders, plus any dependencies with known advisories. Claim this listing to get one. How the security profile works

18 of 18 tools

Documented tools (18)

From project documentation. A server handshake does not verify each tool’s description or behavior.

agent_backends

List backend capabilities and current availability for one workspace

agent_cancel

Request idempotent cancellation of a queued or active job

agent_continue

Queue another turn on an existing session

agent_diagnose

Queue a sessionless backend diagnostic job

agent_fork

Create a child session when the backend supports forking

agent_list

Page through authorized jobs in one workspace

agent_respond

Resolve a pending approval, permission, question, or form input

agent_result

Read the pending or terminal typed result of one job

agent_review

Queue a typed review operation on an existing session

agent_start

Create a durable session and queue its first turn

agent_status

Read the current normalized status of one job

batch_prompt

Yes

clear_preferences

get_model_tiers

get_preferences

prompt

Yes

set_model_tiers

set_preferences

Tool change history

Compared across complete checks of the same configuration. Tools were listed, not invoked. Input-schema changes are not measured here.

No complete tool checks yet.

FAQ

Questions about Nexus MCP Server

How do I connect Nexus MCP Server to Claude?: Run `claude mcp add nexus-mcp -- uvx nexus-mcp` in Claude Code, or add the same command and arguments under mcpServers in Cursor's mcp.json or Claude Desktop's claude_desktop_config.json, then restart the client. The blocks above are ready to paste.
Is Nexus MCP Server free?: The listed licence is MIT. Check the upstream terms for permitted use and commercial requirements; a public repository does not by itself mean the software is free or open source. Connected APIs and hosted services may have separate charges.
What can Nexus MCP Server do?: Nexus MCP Server documents 18 tools to the agent, including agent_backends, agent_cancel, agent_continue. The descriptions above come from project documentation. A live handshake does not test individual tool behavior.